/**
 * @file   hello.cpp
 * @author haoren <haoren@haoren>
 * @date   Fri Sep 17 15:11:07 2021
 * 
 * @brief  helloworld
 * 
 * 
 */
#include<iostream>

int main(int argc, char* argv[])
{
  std::cout <<"Hello World!"<< std :: endl;
  return 0;
}
